EP0579576B1 - 2,4-Dialkyl-6-sec-alkylphenole - Google Patents
2,4-Dialkyl-6-sec-alkylphenole Download PDFInfo
- Publication number
- EP0579576B1 EP0579576B1 EP93810481A EP93810481A EP0579576B1 EP 0579576 B1 EP0579576 B1 EP 0579576B1 EP 93810481 A EP93810481 A EP 93810481A EP 93810481 A EP93810481 A EP 93810481A EP 0579576 B1 EP0579576 B1 EP 0579576B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tert
- butyl
- bis
- methyl
- hydroxy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 0 *C(*)c1cc(*)cc(I)c1O Chemical compound *C(*)c1cc(*)cc(I)c1O 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
- C07C39/02—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring monocyclic with no unsaturation outside the aromatic ring
- C07C39/06—Alkylated phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K15/00—Anti-oxidant compositions; Compositions inhibiting chemical change
- C09K15/04—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds
- C09K15/06—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing oxygen
- C09K15/08—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing oxygen containing a phenol or quinone moiety
Definitions
- the present invention relates to new 2,4-dialkyl-6- sec- alkylphenols and thus organic material stabilized against thermal, oxidative and actinic degradation.
- a number of trialkylphenols e.g. B. 2,6-di- tert- butyl-4-methylphenol (®Swanox BHT), and their use for stabilizing organic material are known.
- US-A-3 511 802 discloses the stabilization of polypropylene resins with alkyl-substituted phenols, for example 2,6-bis (1-methylheptyl) -p-cresol.
- Chemical Abstracts 106: 32349u describes the use of sterically hindered phenols such as e.g. B.
- R 1 as C 1 -C 4 n-alkyl is methyl, ethyl, n-propyl, n-butyl.
- R 1 is preferably methyl or ethyl, especially methyl.
- R 2 as C 4 -C 18 tert-alkyl means a radical -CXYZ, where X, Y and Z independently of one another are C 1 -C 15 alkyl and the sum of the number of carbon atoms in all 3 alkyl units (X + Y + Z) is 3 to 17,
- R 2 therefore means, for example, t-butyl, 2-methyl-but-2-yl, 2-methyl-pent-2-yl, 2-methyl-hept-2-yl, 2- methyl-non-2-yl, 2-methyl-undec-2-yl, 2-methyl-heptadec-2-yl, 3-methyl-pent-3-yl, 3-methyl-hept-3-yl, 3- methyl-non-3-yl, 3-methyl-undec-3-yl, 3-methyl-heptadec-3-yl, etc.
- R 2 is preferably t-butyl.
- R 3 as C 1 -C 28 alkyl can be linear or branched and is, for example, methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, dodecyl, octadecyl, icosyl, docosyl, pentacosyl, hexacosyl or Octacosyl.
- R 3 is C 1 -C 22 alkyl, for example C 8 -C 22 alkyl, in particular C 10 -C 18 alkyl, preferably C 12 -C 18 alkyl.
- R 3 is preferably linear alkyl.
- R 4 is methyl or ethyl, preferably methyl.
- the group -CHR 3 R 4 contains 4-31, for example 6-31, in particular 10-25, preferably 13-21 carbon atoms.
- R 1 is methyl or ethyl.
- R 1 is methyl
- R 2 is C 4 -C 8 tert-alkyl
- R 3 is C 1 -C 22 n-alkyl.
- R 3 is C 8 -C 22 n-alkyl.
- R 2 is C 4 -C 8 tert-alkyl, in particular tert-butyl.
- the compounds of the formula I can be prepared analogously to known processes, for example by catalytic orthoalkylation of 2,4-dialkylphenols with ⁇ -olefins: R 1 , R 2 , R 3 and R 4 are as defined in claim 1. This method can be carried out, for example, in analogy to the methods described in US Pat. No. 3,766,276.
- the reaction is expediently preferred at temperatures of 80-250 ° C. 180-230 ° C, carried out in the presence of a catalyst.
- Suitable catalysts are for example aluminum phenolates, the aluminum phenolate expediently of the corresponding phenol used. It can too Aluminum metal, aluminum oxide, aluminum alcoholates or trialkyl aluminum are used, the corresponding during the reaction Aluminum phenolate is formed. As a rule, the catalyst is used in an amount of 1-10 mol% added.
- Active ⁇ -aluminum oxide becomes a special catalyst for this reaction path prefers.
- the second step, paraalkylation, is then carried out using methods which are generally customary in the art Methods such as B. Friedel-Crafts alkylation.
- the reaction of the phenols with ⁇ -olefins mainly produces compounds of the formula I in which R 4 is methyl.
- mixtures of compounds of the formula I in which R 4 is methyl to be formed with those compounds of the formula I in which R 4 is ethyl.
- the invention also relates to mixtures of compounds of the formula I in which R 4 is methyl, with those in which R 4 is ethyl.
- the weight ratio of the compounds of the formulas (I), in which R 4 is methyl, to those in which R 4 is ethyl is, for example, 99: 1 to 1:99, preferably 99: 1 to 90:10, in particular 95: 5 to 70: 30th
- the phenols of formula I and their mixtures are excellent for Stabilize those sensitive to thermal, oxidative or actinic degradation organic material. They are particularly effective against oxygen and heat, in particular caused by oxygen, types of degradation of the aforementioned Materials. They are therefore particularly useful as excellent antioxidants.
- the invention also relates to compositions comprising (a) a counter oxidative thermal or actinic degradation sensitive organic material and (b) at least one compound of the formula I, or one as described above Mixture of compounds.
- Compositions in which component (a) is a polystyrene are preferred Polystyrene, co- or terpolymer of polystyrene or substituted polystyrene. Examples of this are mentioned above in particular under points 4, 5 and 6.
- IPS impact-resistant polystyrene
- SAN acrylonitrile-butadiene-styrene terpolymers
- ABS acrylonitrile-butadiene-styrene terpolymers
- MBS methyl methacrylate-butadiene-styrene graft copolymers
- component (a) are polycarbonate, polyester carbonate, Polyurethane, polyamide, copolyamide, polyacetal and polyphenylene oxide. Corresponding examples can be found above under points 12, 14 and 15.
- compositions in which component (a) is a polyolefin are also preferred. Examples of this are in particular above under points 1.-3. specified, especially polyethylene and polypropylene are interesting.
- the invention furthermore relates to the use of compounds of the formula I, or the mixtures of compounds of the formula I described above to the
- the incorporation of the compounds of formula I or the mixtures, and optionally further additives in the organic material are carried out according to known Methods, for example before or during shaping or by application of the dissolved or dispersed compounds on the organic material, if appropriate with subsequent evaporation of the solvent.
- the compounds of formula I. can also be in the form of a master batch, for example in a concentration contains from 2.5 to 25 wt .-%, are added to the materials to be stabilized.
- the compounds according to the invention can be used before or during the polymerization or be added before crosslinking.
- the compounds according to the invention can be used in pure form, as solutions, Dispersions or in waxes, oils or polymers encapsulated in the one to be stabilized Material can be incorporated.
- the materials stabilized in this way can be used in various forms, e.g. as foils, fibers, tapes, molding compounds, profiles or as binders for paints, Adhesives or putties.
- the compounds according to the invention are also suitable as chain terminators in the anionic solution polymerization of 1,3-dienes.
- Examples 2-10 are prepared analogously to the compound of Example 1, using the corresponding phenols and ⁇ -olefins as starting products. Their structures and physical data can be found in Table 1.
- ABS acrylonitrile-butadiene-styrene terpolymer
- the additives listed in Table 2 are dissolved in 40 ml of a solvent mixture of hexane / isopropanol.
- the solution is added to a dispersion of 100 g ABS in 600 g water with vigorous stirring, the solution being completely absorbed by the ABS in a short time (approx. One minute).
- the ABS powder is suction filtered and dried in vacuo for 40 hours at 40 ° C.
- 2% titanium dioxide (pigment) and 1% ethylene bis-stearic acid amide (lubricant) are added to the dry powder.
- the mixture is then compounded for 4 minutes on a two-roll mill at 180 ° C.
- a sheet 0.8 mm thick is pressed from the rolled sheet at 175 ° C., from which test specimens of 45 ⁇ 17 mm 2 are punched out.
- the effectiveness of the additives added is tested by heat aging in a forced air oven at 180 ° C.
- the color development after 45 minutes of testing serves as a criterion.
- the color intensity is determined using the "Yellowness Index" according to ASTM D 1925-70. Higher values mean more intense yellowing.
- the experiments show that the yellowing is effectively suppressed by the compounds according to the invention added.
- Additive Yellowness index after 45 min at 180 ° C - 78 0.5% DLTDP 75 0.5% DLTDP + 0.25% of the compound from example no. Yellowness index after 45 min at 180 ° C 1 30th 2nd 30th 3rd 30th 4th 30th 5 28 6 30th 7 29 9 30th 10th 31 DLTDP dilauryl thiodipropionate
- Example 12 Stabilization of a polypropylene
- Example 13 Stabilization of a high density polyethylene
- test mixture is pressed at 180 ° C. for 6 minutes to form 2 mm thick plates, and test specimens are punched out from these plates in the form of disks with a diameter of 26 mm.
- the Yellowness Index is determined from these test specimens (photometer: Datacolor 3890, aperture 27, without UV, without gloss, standard light C, 2 ° detector). The results are shown in Table 3. Polymer Yellowness index Example 12 8.3 Example 13 8.2
- Example 14 Stabilization of a polypropylene
- Example 15 Stabilization of X-SBR Latex (Carboxylated SBR Latex)
- the "Deposit and Oxidation Panel Test” (DOPT) is a variant of the test method for engine oils, in particular for diesel engine oils, which was described by G. Abellaneda et al III Symposium CEC, 1989, 61, New Cavendish Street, London WIM8AR, England has been.
- the suitability of the oils with stabilizers to prevent deposits on pistons is checked.
- a moist air atmosphere enriched with 260 ppm NO 2 and 26 ppm SO 2 the oil to be tested is dripped onto a heated metal plate (panel).
- the test duration is 20 hours, the panel temperature 260 ° C and the oil flow 1 ml / minute. After the test, the deposits on the metal plate onto which the oil drips are determined by weighing.
Description
- R1
- C1-C4-n-Alkyl bedeutet,
- R2
- C4-C18-tert-Alkyl oder α,α-Dimethylbenzyl ist,
- R3
- für C1-C28-Alkyl steht und
- R4
- Methyl oder Ethyl bedeutet,
Bevorzugt ist R2 t-Butyl.
Insbesondere ist R3 C1-C22-Alkyl, z.B. C8-C22-Alkyl, insbesondere C10-C18-Alkyl, vorzugsweise C12-C18-Alkyl.
Bevorzugt ist R3 lineares Alkyl.
Als geeignete Katalysatoren für den Orthoalkylierungsschritt bei der Anwendung dieser Methode seien genannt:
Wenn bei der Herstellung ein Gemisch aus den Verbindungen der Formel I anfällt, kann dieses z.B. mit Hilfe von chromatographischen Verfahren, insbesondere Gaschromatographie und Hochdruckflüssigchromatographie (HPLC), aufgetrennt werden. In der Regel ist eine Trennung von solchen Gemischen nicht erforderlich. Sie werden vorzugsweise direkt als Stabilisatoren für organisches Material eingesetzt, wie unten beschrieben.
Das sind die Mischungen, die direkt bei der Umsetzung der Phenole mit den α-Olefinen entstehen können. Dabei enthält der Rest R3 zwangsläufig in den Verbindungen mit R4 = Methyl eine Methylengruppe mehr als in den Verbindungen mit R4 = Ethyl.
Elementaranalyse: | |||||
ber.: | C: | 83,44 % | gef.: | C: | 83,47 % |
H: | 12,45 % | H: | 12,66 % |
Aus dem Walzfell wird bei 175 °C eine Platte von 0,8 mm Dicke gepresst, aus welcher Prüflinge von 45 x 17 mm2 ausgestanzt werden. Die Prüfung auf Wirksamkeit der zugesetzten Additive wird durch Hitzealterung in einem Umluftofen bei 180 °C vorgenommen. Als Kriterium dient die Farbentwicklung nach 45 Minuten Prüfdauer. Die Farbintensität wird mit dem "Yellowness Index" nach ASTM D 1925-70 bestimmt. Höhere Werte bedeuten intensivere Gelbfärbung. Die Versuche zeigen, dass die Gelbfärbung durch die zugesetzten erfindungsgemässen Verbindungen wirksam unterdrückt wird.
Additiv | Yellowness Index nach 45 min bei 180 °C |
- | 78 |
0,5 % DLTDP | 75 |
0,5 % DLTDP + 0,25 % der Verbindung aus Beispiel Nr. | Yellowness Index nach 45 min bei 180 °C |
1 | 30 |
2 | 30 |
3 | 30 |
4 | 30 |
5 | 28 |
6 | 30 |
7 | 29 |
9 | 30 |
10 | 31 |
DLTDP = Dilaurylthiodipropionat |
Das Prüfgemisch wird dann bei 200 °C während 6 Minuten zu 2 mm dicken Platten gepresst, und aus diesen Platten werden Scheiben mit 26 mm Durchmesser als Prüflinge ausgestanzt.
Von diesen Prüflingen wird der Yellowness Index bestimmt (Fotometer: Datacolor 3890, Blende 27, ohne UV, ohne Glanz, Normlicht C, 2° Detektor). Die Ergebnisse sind der Tabelle 3 zu entnehmen.
Von diesen Prüflingen wird der Yellowness Index bestimmt (Fotometer: Datacolor 3890, Blende 27, ohne UV, ohne Glanz, Normlicht C, 2° Detektor). Die Ergebnisse sind der Tabelle 3 zu entnehmen.
Polymer aus | Yellowness Index |
Beispiel 12 | 8,3 |
Beispiel 13 | 8,2 |
Pressbedingung °C/min | Yellowness Index nach Extrusion | ||
1 | 3 | 5 | |
260/6 | 3,5 | 3,9 | 4,3 |
300/6 | 3,4 | 3,6 | 4,2 |
Die Prüfung auf Wirksamkeit der zugesetzten Stabilisatoren wird durch Hitzealterung in einem Umluftofen bei 150 °C vorgenommen. Nach den in Tabelle 5 angegebenen Zeitabständen wird die Verfärbung der Proben nach ASTM D 1925-70 (Yellowness INdex) bestimmt. Die Prüfergebnisse sind in Tabelle 4 zusammengestellt. Höhere Werte bedeuten intensivere Gelbfärbung.
Stabilisator aus Beispiel | Yellowness-Index nach Alterung bei 150 °C nach | ||
2 | 4 | 6 Stunden | |
- | 93 | ||
1 | 32 | 58 | 71 |
2 | 30 | 56 | 71 |
3 | 32 | 56 | 70 |
4 | 36 | 56 | 74 |
5 | 37 | 61 | 75 |
7 | 33 | 59 | 74 |
9 | 33 | 58 | 74 |
10 | 33 | 59 | 70 |
Wenn über Polyol bei erhöhter Temperatur Sauerstoff geleitet wird, setzt eine Oxidationsreaktion ein. Die Reaktion lässt sich leicht nachweisen, da die gebildeten Oxidationsprodukte leicht flüchtig und zudem sauer sind, sodass sie nach Auffangen in Wasser die Leitfähigkeit (gemessen in µs/cm) der Lösung heraufsetzen. Durch Zusatz von Stabilisatoren wird diese Oxidationsreaktion quantitativ bis zum vollständigen Verbrauch des Stabilisators verhindert. Wird die Leitfähigkeit in Abhängigkeit von der Zeit gemessen, so ist der Beginn der Oxidation durch den Kurvenverlauf (lineare Steigung) zu erkennen. Die Zeit vom Beginn des Versuchs bis zum Kurvenanstieg ist ein Mass für die Wirksamkeit des Stabilisators. Die Ergebnisse sind der folgenden Tabelle 6 zu entnehmen.
Stabilisator Verbindung aus Beispiel Nr. | Minuten bis zum Erreichen einer Leitfähigkeit von 25 µS/cm bei 150 °C in O2 |
Referenz | 37 |
3 | 40 |
4 | 44 |
6 | 40 |
In einer feuchten Luft-Atmosphäre, die mit 260 ppm NO2 und 26 ppm SO2 angereichert ist, wird das zu prüfende Oel auf eine erhitzte Metallplatte (Panel) getropft. Die Testdauer beträgt 20 Stunden, die Panel-Temperatur 260 °C und der Oelfluss 1 ml/Minute. Nach dem Test werden die Ablagerungen auf der Metallplatte, auf die das Oel tropft, durch Wiegen bestimmt. Eine zweite Bewertung erfolgt visuell. Bei der visuellen Beurteilung entsprechen die kleineren Werte den besten Ergebnissen. Als Schmieröl wird ein handelsübliches CD-Oel, welches mit dem Grundöl STANCO 150 verdünnt wird, verwendet. Diesem Oel werden die Stabilisatoren in einer Menge von 0,6 Gew.-%, bezogen auf das Oel, zugemischt und der DOPT-Prüfung unterzogen.
Die Ergebnisse sind in Tabelle 7 wiedergegeben.
Stabilisator aus Beispiel Nr. | Ablagerungen auf Panel | |
Gewicht [mg] | visuell | |
keiner | 72,0 | 14 |
1 | 22,5 | 6 |
Claims (13)
- Verbindungen der Formel I nach Anspruch 1, worin
- R1
- Methyl oder Ethyl, insbesondere Methyl, bedeutet.
- Verbindungen der Formel I nach Anspruch 1, worin
- R1
- Methyl ist,
- R2
- C4-C8-tert-Alkyl, insbesondere tert-Butyl, bedeutet und
- R3
- C1-C22-n-Alkyl, insbesondere C8-C22-n-Alkyl, ist.
- Verbindungen der Formel I nach Anspruch 1, worin
- R4
- Methyl ist.
- Mischungen von Verbindungen der Formel I, worin R4 Methyl bedeutet, mit solchen, worin R4 Ethyl bedeutet.
- Mischungen nach Anspruch 5, worin das Mischungsverhältnis 99:1 bis 1:99, insbesondere 99:1 bis 90:10, beträgt.
- Mischungen nach Anspruch 5, worin in den Verbindungen der Formel I mit R4 = Methyl die Kettenlänge von R3 um eins grösser ist als in den Verbindungen der Formel I mit R4 = Ethyl.
- Zusammensetzung enthaltend (a) ein gegen thermischen, oxidativen oder aktinischen Abbau empfindliches organisches Material und (b) mindestens eine Verbindung der Formel I, eine Mischung gemäss Anspruch 5.
- Zusammensetzung nach Anspruch 8, worin (a) ein Polystyrol, ein substituiertes Polystyrol, ein Co- oder Terpolymeres von Styrol oder substituiertem Styrol, ein Polycarbonat, ein Polyestercarbonat, ein Polyurethan, ein Polyamid, ein Copolyamid, ein Polyacetal, ein Polyphenylenoxid, ein Polyolefin, ein Mineralöl, ein pflanzliches oder tierisches Oel oder Fett, ist.
- Zusammensetzung nach Anspruch 8, worin die Komponente (a) ein Polystyrol, substituiertes Polystyrol oder Co- oder Terpolymeres von Styrol oder substituiertem Styrol, insbesondere schlagfestes Polystyrol (IPS), ein Styrol-Acrylnitril-Copolymer (SAN), ein Acrylnitril-Butadien-Styrol-Terpolymer (ABS) oder ein Methacrylnitril-Butadien-Styrol-Terpolymer (MBS), ist.
- Zusammensetzung nach Anspruch 8, worin die Komponente (a) ein Polycarbonat, Polyestercarbonat, Polyurethan, Polyamid, Copolyamid, Polyacetal oder Polyphenylenoxid ist.
- Zusammensetzung nach Anspruch 8, worin die Komponente (a) ein Polyolefin ist.
- Verwendung von Verbindungen der Formel I, bzw. Mischungen gemäss Anspruch 5 zum Stabilisieren von gegen thermischen, oxidativen oder aktinischen Abbau empfindlichem organischem Material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93810481A EP0579576B1 (de) | 1992-07-15 | 1993-07-06 | 2,4-Dialkyl-6-sec-alkylphenole |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92810538 | 1992-07-15 | ||
EP92810538 | 1992-07-15 | ||
EP93810481A EP0579576B1 (de) | 1992-07-15 | 1993-07-06 | 2,4-Dialkyl-6-sec-alkylphenole |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0579576A1 EP0579576A1 (de) | 1994-01-19 |
EP0579576B1 true EP0579576B1 (de) | 1998-05-20 |
Family
ID=8211950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93810481A Expired - Lifetime EP0579576B1 (de) | 1992-07-15 | 1993-07-06 | 2,4-Dialkyl-6-sec-alkylphenole |
Country Status (12)
Country | Link |
---|---|
US (1) | US5356976A (de) |
EP (1) | EP0579576B1 (de) |
JP (1) | JPH06166645A (de) |
KR (1) | KR100286115B1 (de) |
BR (1) | BR9302847A (de) |
CA (1) | CA2100406A1 (de) |
CZ (1) | CZ139193A3 (de) |
DE (1) | DE59308564D1 (de) |
ES (1) | ES2117701T3 (de) |
MX (1) | MX9303863A (de) |
SK (1) | SK280307B6 (de) |
TW (1) | TW276260B (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4894972A (en) * | 1986-12-19 | 1990-01-23 | Central Glass Company, Limited | Window assembly and method of producing same |
ES2101994T3 (es) * | 1992-04-08 | 1997-07-16 | Ciba Geigy Ag | Antioxidantes liquidos como estabilizadores. |
EP0669367A1 (de) * | 1994-02-24 | 1995-08-30 | Ciba-Geigy Ag | Phenolische Stabilisatormischungen |
US5811829A (en) * | 1995-08-10 | 1998-09-22 | Arco Chemical Technology, L.P. | Viscosity stable isocyanate-terminated prepolymers and polyoxyalkylene polyether polyols having improved storage stability |
DE19802142A1 (de) * | 1998-01-22 | 1999-07-29 | Otto Geb Kg | Polymerzusammensetzung, ihre Herstellung, ihre Weiterverarbeitung zu Behältnissen, insbesondere zu Lager- und Transportbehältnissen und Entsorgungsbehältnissen sowie die Verwendung von Phenolen zum Schutz des Behälterinhaltes in kunststoffenthaltenden Materialien, insbesondere aber in hieraus hergestellten Entsorgungsbehältnissen |
JP4873111B2 (ja) * | 2001-08-08 | 2012-02-08 | ブリヂストンスポーツ株式会社 | ゴルフボール用材料及びゴルフボール |
DE102005015474A1 (de) * | 2005-04-04 | 2006-10-05 | Degussa Ag | Verfahren zur Erhöhung der Oxidationsstabilität von Biodiesel |
JP2011084669A (ja) * | 2009-10-16 | 2011-04-28 | Kao Corp | ポリエーテルポリカーボネート含有組成物 |
JP6186974B2 (ja) * | 2012-07-30 | 2017-08-30 | Jnc株式会社 | 液晶組成物、酸化防止剤および液晶表示素子 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2581907A (en) * | 1946-03-09 | 1952-01-08 | Firestone Tire & Rubber Co | Rubbery diolefinic polymers containing as antioxidant a mixture of antimony oxide and a 2, 4, 6 trihydrocarbon substituted phenol |
US3183273A (en) * | 1955-03-31 | 1965-05-11 | Goodyear Tire & Rubber | Tri-substituted phenols having alkyl, tertiary alkyl, and aralkyl substituents |
US3347938A (en) * | 1964-04-23 | 1967-10-17 | Eastman Kodak Co | Antioxidant composition |
US3424712A (en) * | 1966-01-03 | 1969-01-28 | M & T Chemicals Inc | Stabilized resins containing a phenol and a stannoic acid |
US3511802A (en) * | 1968-06-10 | 1970-05-12 | Eastman Kodak Co | Stabilized polypropylene resin composition |
US3766276A (en) * | 1970-03-16 | 1973-10-16 | Ethyl Corp | Phenol alkylation process |
US3933927A (en) * | 1970-03-16 | 1976-01-20 | Ethyl Corporation | Phenol transalkylation process |
US3776276A (en) * | 1971-03-15 | 1973-12-04 | M Stiltner | Valve seal |
GB1396107A (en) * | 1971-10-15 | 1975-06-04 | Ciba Geigy Ag | Preparation of phenols |
BE793547A (fr) * | 1971-12-29 | 1973-04-16 | Southwire Co | Composition murissable a base de polyethylene stabilise par un di(1-methylheptadecyl)-4-alkylphenol et son procede de production |
US3989665A (en) * | 1975-01-20 | 1976-11-02 | The Goodyear Tire & Rubber Company | Butylated, α-methyl styrenated phenolic antioxidants for polymers |
EP0406169B1 (de) * | 1989-06-30 | 1997-06-04 | Ciba SC Holding AG | 2,4-Dimethyl-6-s-alkylphenole |
-
1993
- 1993-05-31 TW TW082104304A patent/TW276260B/zh active
- 1993-06-28 MX MX9303863A patent/MX9303863A/es unknown
- 1993-07-06 ES ES93810481T patent/ES2117701T3/es not_active Expired - Lifetime
- 1993-07-06 DE DE59308564T patent/DE59308564D1/de not_active Expired - Fee Related
- 1993-07-06 EP EP93810481A patent/EP0579576B1/de not_active Expired - Lifetime
- 1993-07-12 US US08/090,836 patent/US5356976A/en not_active Expired - Fee Related
- 1993-07-13 KR KR1019930013115A patent/KR100286115B1/ko not_active IP Right Cessation
- 1993-07-13 SK SK735-93A patent/SK280307B6/sk unknown
- 1993-07-13 CZ CZ931391A patent/CZ139193A3/cs unknown
- 1993-07-13 CA CA002100406A patent/CA2100406A1/en not_active Abandoned
- 1993-07-14 BR BR9302847A patent/BR9302847A/pt not_active Application Discontinuation
- 1993-07-15 JP JP5197892A patent/JPH06166645A/ja active Pending
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Publication number | Publication date |
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ES2117701T3 (es) | 1998-08-16 |
SK280307B6 (sk) | 1999-11-08 |
CZ139193A3 (en) | 1994-02-16 |
BR9302847A (pt) | 1994-03-15 |
DE59308564D1 (de) | 1998-06-25 |
MX9303863A (es) | 1994-01-31 |
KR940002209A (ko) | 1994-02-16 |
KR100286115B1 (ko) | 2001-04-16 |
JPH06166645A (ja) | 1994-06-14 |
TW276260B (de) | 1996-05-21 |
US5356976A (en) | 1994-10-18 |
SK73593A3 (en) | 1994-06-08 |
EP0579576A1 (de) | 1994-01-19 |
CA2100406A1 (en) | 1994-01-16 |
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